Detonator package



Jan. 15, 1929. 1,698,962

J. M. OLIN ET AL DETONATOR PACKAGE Filed Sept. 16. 1922 Patented Jan. 1'5, 1929. i

JOHN M. OLIN AND JOHN B. SMITH, OF EAST ALTON, ILLINOIS, ASSIGNORS T0 WEST- ERIN DETONATOR PACKAGE.

CARTRIDGE COMPANY, OF EAST ALTON, ILLINOIS, A CORPORATION OF DELA- Application filed September 16, 1922. Serial No. 588,583.

This invention relates to prepared detonator packages utilizing a detonator of the electric ignition type.

In detonators of the type referred to, the detonator cap cartridge or shell is loaded With a high explosive which is electrically ignited; accordingly the cartridge has attached thereto leading in or igniter wires for the purpose of conducting the igniting current thereto in order to effect ignition of the charge. The igniter wire is usually of considerable length and since the cartridges must be furnished with the wire attached thereto, the handling and shipping of the same is rather inconvenient.

A detonator cartridge is subjected to shocks during handling and shipment and it frequently happens that explosion takes place during such handling or shipment with hability of injury to life and limbs and damage to property. Accordingly for shipment these detonators must not only be carefully packed, but the accident, express and freight rates are unduly high.

One of the objects of this invention, therefore, is to provide a prepared package in which the detonator cartridge and the igniter wire attached thereto are assembled to provide a compact and convenient package which can not only be readily stored and shipped, but also when required for use is so constructed and arranged as to permit the wire to be readily strung out for the purpose of connection of the wire to the source of current, while the cartridge itself is in detonating position.

Another object of this invention, therefore, is to provide a prepared package in which the detonator cartridge has a protective casing.

Further objects will appear from the detail description taken in connection with the accompanying drawing, in which Figure 1 is an elevation (somewhat enlarged) showing an embodiment of a prepared detonator package embodying this invention; and

Figure 2 is a section on line 2-2 Figure 1.

Referring to the accompanying drawing, 1 designates the detonator cartridge, or shell, which as usual is of drawn metal and contains a charge of high explosive, and 2 designates the igniter wire, which leads'from and is attached to the cartridge, the wire passing through a seal 3 of suitable material closing the end of the cartridge and terminating intion accomplishes its objects. package is provided which is compact, conside of the shell in a filament adapted to glow when the current is passed through the wire. This cartridge and its connections so far de: scribed may be of any usual and suitable construction, and a further detail description thereof is, therefore, unnecessary.

The wire is preferably wound upon a tube 4 of paper, card board or any other suitable mater1al,so as to provide a coiled casing which in this case encloses the tube as well as the cartridge. The wire is preferably coiled back and forth as shown, with the outer layer helices crossing those of inner layer and so that the cartridge attached end of the strand and the free end of the strand both terminate at one end of the coil, and these ends of the strand preferably pass through slots 5 in the end of or helices of one layer cross those of the other,

the efiect will be to cause one to hold the other, and the ends will, therefore, be secured since they double over one another to form bights. Of course, it will be understood that the wire is insulated and is moreover of substantial cross secton so as to be comparatively stiff,

whereby the package will readily retain its shape.

It will, therefore, be seen that the inven- A prepared venient, simple and inexpensive, while the wires and cartridge will be firmly held in assembled relation; the layers of stiif wire mutually sustaining one another in order to form a self-sustained casing, while the car.-

-tridge is retained in the casing by the stiff cartridge-attached strands. en it is desired to use the package, the cartridge can be withdrawn'from the casing and placed in detonating position. By then freeing the strand from the slots 5, the wire can be readily uncoiled so as to enable connections to be made to the source of current.

It will be noted that the wire coiled around the detonator cartridge, either alone or in connection with the tube, provides a very strong protective casing which can withstand an explosion of the cartridge, since the rupture of the cartridge shell is lateral and usually intermediate its ends where the protective casing covers it. Accordingly injury to life and limb during handling and damage to property during shipment is, therefore, considerably lessened so that accident, express and freight rates can be considerably reduced.

It is obvious that various changes may be made in details of construction without departing from the spirit of this invention; it is, therefore, to be understood that this invention is not to be limited to the specific details shown and described.

Having thus described the invention, what is claimed is:

1. A prepared package comprising, a detonator cartridge, igniter wire attached thereto, and a tube on .Which the wire is coiled, the cartridge being inserted endwise into the tube, and the wire being secured on the tube.

- coiled, the cartridge being inserted endwise into one end of the tube While the cartridgeattached end of the strand is secured to and leads from the other end of the tube.

4. A prepared package comprising, a detonator cartridge, igniter wire attached thereto, and a tube on which the Wire is coiled back and forth, the cartridge-attached end of the strand being secured to one end of the tube, while the cartridge is inserted into the other end of the tube.

5. A prepared package comprising, a det onator cartridge, igniter wire attached thereto, and a tube on which the wire is coiled back and forth, the cartridge-attached and free ends of the strand being secured to one end of the tube, while the cartridge is inserted into the other end of the tube.

6. A prepared package comprising, a detonator cartridge and stifl igniter wire attached thereto, the wire being coiled back and forth to form a series of layers which mutually support one another in order to provide a self-sustained casing, and the cartridge being inserted endwise into the casing so formed and being retained therein by the cartridge-attached end of the strand.

7. A prepared package comprising, a detonator cartridge and stiff igniter wire attached thereto, the wire being coiled back and forth to form a series of layers which mutually support one another in order to provide a self-sustained casing, with the cartridge-attached end of-the strand secured at one end of the coil, while the cartridge is inserted endwise into the other end of the coil.

8. A prepared package comprising, a dettonator cartridge and stifif igniter wire attached thereto, the wire being coiled back and forth to form a series of layers which mutually support one another in order to provide a self-sustained casing, with the cartidge-attached and free ends of the strand secured at one end of the coil, while the car tridge is inserted endwise into the other end of the coil.

In testimony whereof we aflix our signatures this 29th day of June, 1922.

JOHN M. OLIN. JOHN B. SMITH. 

